HEP Experiment2026-01-132 minarXiv:2601.08090expressA Trap for Dark Matter in the Gaps Between PulsesThe LCLS-II X-ray laser in California fires short, powerful flashes, like a strobe light at a disco. Between flashes, there are dark pauses lasting 26.9 nanoseconds (billionths of a second).Elizabeth Berzin·Lene Kristian Bryngemark·Robert Craig Group·Joesph Kaminski·Timothy Nelson·Rory O'Dwyer·Jessica Pascadlo·Emrys Peets·Benjamin Reese·Lauren Tompkins·Kieran Wall·Andrew WhitbeckCharles TownesAdam RiessEdwin Hubblelaserfast radio burstdark matter👍👎☆SimplePopularAdvanced